Introduce MemoryCoordinatorProxy in base

content/browser/memory/memory_coordinator.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_MEMORY_MEMORY_COORDINATOR_H_
 #define CONTENT_BROWSER_MEMORY_MEMORY_COORDINATOR_H_
 
 #include "base/memory/memory_coordinator_client_registry.h"
 #include "base/process/process_handle.h"
 #include "content/common/content_export.h"
@@ skipping 11 matching lines @@
 // MemoryCoordinator is responsible for the whole memory management accross the
 // browser and child proceeses. It dispatches memory events to its clients and
 // child processes based on its best knowledge of the memory usage.
 class CONTENT_EXPORT MemoryCoordinator {
  public:
   virtual ~MemoryCoordinator();
 
   // Singleton factory/accessor.
   static MemoryCoordinator* GetInstance();
 
+  static void EnableFeaturesForTesting();
+
   // Starts monitoring memory usage. After calling this method, memory
   // coordinator will start dispatching state changes.
   virtual void Start() {}
 
   // Creates a handle to the provided child process.
   void CreateHandle(int render_process_id,
                     mojom::MemoryCoordinatorHandleRequest request);
 
   // Returns number of children. Only used for testing.
   size_t NumChildrenForTesting();
@@ skipping 60 matching lines @@
   ChildInfoMap children_;
 
   std::unique_ptr<MemoryCoordinatorDelegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(MemoryCoordinator);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEMORY_MEMORY_COORDINATOR_H_